SEMSIM involves the increased use of computerized salt spreaders on the salt
trucks. These spreaders more efficiently regulate salt use, meaning less salt is
unnecessarily applied to roads. Each SEMSIM truck is equipped with a
computerized salt spreader. The spreaders better regulate the use of salt and,
through SEMSIM, continually send data back to the snow managers about how much
salt is being applied and where. The computerized spreaders regulate the spread
rate based on vehicle speed. As the vehicle slows down and stops, the amount of
salt being spread is reduced or stopped. This means that these vehicles are not
still spraying salt while they are idling at traffic lights or in traffic jams.
Salt is a critical part of winter road maintenance in Southeast Michigan: No
other substance is as effective at eliminating snow and ice, which is necessary
to ensure safe roads. Because the safety of motorists is the top priority, salt
is used to make the roads safe in winter. However, excess salt is not good for
the environment and the SEMSIM partners are committed to helping the
environment.